Dangerous for cats
First of all, the pieces are way too hard to move, so my cats didn’t learn how to open them and, as a result, they didn’t like the toy. But the biggest downside is that this toy can actually hurt your cat. My cat, not being able to open the flaps, tried to pry them with her paw and must have got it stuck, because she started yowling. I don’t recommend it, it’s a pity.